# Marathon Oil Company Drilling Permits in Texas and Oklahoma

**TL;DR:** Marathon Oil Company has filed 52 oil and gas drilling permits in Texas and Oklahoma over the last 24 months (through May 6, 2026). The vast majority of activity is concentrated in South Texas counties—particularly Karnes County (38 permits)—with nearly all permits targeting the Gulf Coast Basin. This page provides mineral owners with a monthly-refreshed list of Marathon's planned drilling locations, offering insight into where the operator is deploying capital and potentially creating new royalty opportunities.

## Key Takeaways

- **Marathon Oil has filed 52 drilling permits in TX and OK over the past 24 months**, with the most recent permit dated May 6, 2026; data is refreshed monthly from state regulator filings (Texas Railroad Commission and Oklahoma Corporation Commission).
- **Karnes County, Texas dominates Marathon's permit activity** with 38 permits (73% of total), followed by Atascosa County (7 permits), De Witt County (4 permits), and Gonzales County (3 permits).
- **The Gulf Coast Basin (LA–TX) accounts for 48 of 52 permits** (92%), indicating Marathon's strategic focus on South Texas Eagle Ford and Austin Chalk plays.
- **Lateral lengths vary significantly**, ranging from 1,213 feet to 15,830 feet, with many recent permits featuring extended-reach laterals exceeding 7,000 feet to maximize reservoir contact.
- **Permits represent future drilling activity and leading indicators of operator investment**, as these wells have been permitted but have not yet started producing as of the June 1, 2026 data refresh.
- **Mineral owners near Marathon permit locations may have new royalty opportunities** or increased asset valuation if their acreage is within Marathon's planned drilling units.
- **Marathon's recent permitting pace shows seasonal clustering**, with 24 permits filed in Q2 2026 (April–May), 28 permits in Q2–Q3 2025, and additional permits scattered through late 2024.

## Page Highlights

**Recent Drilling Activity Table**: Comprehensive list of all 52 Marathon Oil permits from the past 24 months, including permit date, well name, API number, county, state, formation/play, and lateral length; wells range from April 2024 through May 2026, with most activity concentrated in 2025–2026.

**Where Marathon Is Drilling (Geographic Focus)**: Top counties are Karnes, TX (38 permits), Atascosa, TX (7 permits), De Witt, TX (4 permits), and Gonzales, TX (3 permits); all activity is South Texas–focused with no Oklahoma permits in the 24-month window.

**Formation/Play Distribution**: Gulf Coast Basin (LA–TX) accounts for 48 of 52 permits; four permits list formation as "—" (not yet designated or in early permitting stages).

**Mineral Owner Opportunity Section**: Explains that nearby mineral owners may benefit from new production and offers free written valuations from Buckhead Energy based on the latest permit, rig, and production data.

**Data Provenance and Refresh Schedule**: Data is sourced from state regulator filings, current as of June 1, 2026, and refreshed monthly; 24-month lookback period for permit history.

## Structured Data Summary

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## Related Topics

- [Marathon Oil Company Profile](https://www.buckheadenergy.com/operators/marathon-oil-company)
- [Full Operator Directory](https://www.buckheadenergy.com/operators)
- [Sell Your Mineral Rights](https://www.buckheadenergy.com/sell)
- [Mineral Rights Glossary](https://www.buckheadenergy.com/glossary)

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